Always Have Been Able To See Things

I am hoping to find an explanation about an event that happened last night. Thing is My friend sleeps in my room in her own bed and I sleep in my own bed. My son was asleep in my grandfathers room. Well I was in a deep sleep and I don't remember any of this at all but my friend told me that last night between 3 and 4 am she heard a child ask me if I wanted to play and I answered it and said not right now honey maybe later. The room was pitch black no TV on or music. She had just laid down and was fully awake. I don't know what to make of this. I have seen things out of the corner of my eyes these past couple days but I didn't feel threatened and I just ignored it. A few days ago I saw a child size black figure out of the corner of my eye running past me back and forth. I grew up in this house most my life nothing has ever happened here other than my grandmothers passing 5 years ago. I do have a past history of dealing with ghosts in a house I lived in 1998-2007. That house had 4 spirits. A woman on the side of the house would watch me at night walk up to my house. A little girl playing in the front yard and she would play in my baby brothers room. Another female around 20 something would lay in my bed. Than there was the evil man. He was awful he slammed the garage door on me made me fly across the room. Banged on the house at 3 am every night shaking the house. He would stare in the windows and scare females and children. He came in my dreams tormenting me trying to rape me. Than later a few weeks my roommates told me they had the same dream and same guy. So I did a house cleansing and he couldn't come in anymore but he stayed outside making the dogs growl and bark. He would still stare in the windows. We finally moved but none of the spirits followed us thank goodness. My whole life I have been able to feel things. When my grandmother passed away I closed my mind and blocked everything out. She died on Nov 21st 2010 at 10:43 pm in her room. I don't feel her. Now though something is trying to get my attention and I don't know if it is good or bad plus my roommate hearing the conversation I know its not just me and I am not going crazy. 3 am is a bad time to be hearing things, but to have it talk to me while I am in a deep sleep and answer it plus my friend heard it. What is it? What does it want?